Scan Tool Data Definitions. Chevrolet PJJ 2000

For 1990-2009 cars

Use the Scan Tool Data Display Values and Definitions Information in order to assist in diagnosing vehicle malfunctions. Compare the vehicles actual scan tool data with the typical data display value table information. Use the data information in order to aid in understanding the nature of the problem when the vehicle does not match with the typical data display values.

### Passlock Data Voltage

The scan tool displays the voltage code from the Passlock™ sensor to the BCM. The BCM determines if the voltage received is a valid or invalid code voltage.

### Passlock Power Output

The scan tool displays the state of the Passlock™ system power.

### Passlock Power Feedback

The scan tool displays the state of the Passlock™ system power feedback.

### Security LED

The scan tool displays the state of the body control module (BCM) commanding the SECURITY lamp. The scan tool displays ON, OFF or FLASHING, as commanded by the BCM.

### Security Lamp Status

The scan tool displays the state of the SECURITY lamp. The scan tool displays ON, OFF or FLASHING.

### Lockout Timer Status

The scan tool displays the time remaining when in tamper mode. The timer starts when the ignition switch is turned to the ON position and the BCM receives a Passlock™ data voltage different from the last learned voltage. The timer has a delay of 10 minutes and will stay active even if the ignition switch is cycled from the ON to the OFF position.

### Auto Learn Timer Status

The scan tool displays the time in seconds used by the BCM to learn valid code from the Passlock™ sensor using the techline terminal reprogramming procedure.

### Seed and Key Timer Status

The scan tool displays the time in seconds used by the BCM to learn a valid code from the Passlock™ sensor. The learn procedure consists of 3 consecutive periods.